Question

An ideal gas having molar specific heat capacity at constant volume $\frac { 3 } { 2 }$ is R, the molar specific heat capacities at constant pressure is

• A. $\frac { 1 } { 2 }$ R
• B. $\frac { 5 } { 2 }$R
• C. $\frac { 7 } { 2 }$ R
• D. $\frac { 9 } { 2 }$ R

Answer 1

Answer: (B)

$\frac { 5 } { 2 }$R

Answer 2

: here, $C _ { V } = \frac { 3 } { 2 } R$

Since$C _ { p } - C _ { V } = R$

$\therefore C _ { p } = C _ { V } + R = \frac { 3 } { 2 } R + R = \frac { 5 } { 2 } R$